(1) Where a trustee, either original or substituted, and whether appointed by a court or otherwise, is dead, or remains out of the United Kingdom for more than twelve months, or desires to be discharged from all or any of the trusts or powers reposed in or conferred on him, or refuses or is unfit to act therein, or is incapable of acting therein, then the person or persons nominated for the purpose of appointing new trustees by the instrument, if any, creating the trust, or if there is no such person, or no such person able and willing to act, then the surviving or continuing trustees or trustee for the time being, or the personal representatives of the last surviving or continuing trustee, may, by writing, appoint another person or other persons to be a trustee or trustees in the place of the trustee dead, remaining out of the United Kingdom, desiring to be discharged, refusing, or being unfit or being incapable, as aforesaid.

(2) On the appointment of a new trustee for the whole or any part of trust property

(a) the number of trustees may be increased; and